Baseboard radiators



Sept. 8, 1959 R. KRlTzER BAsEBoARD RAnIAToRs Filed De. 2o, 1957 IN VEN TOR.

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R. w. KRITZER BAsEBoARn RADIAToRs Sept. 8, 1959 3 Sheets-Sheet 2 Filed Dec. 20,-195'7 INVENTOR.

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Sept. 8, 1959 R. w. KRlTzl-:R

BASEBOARD RADIATORS 3 Sheets-Sheet 5 Filed Deo. 20, 1957 INVENTOR. RucHARD w. KRITZER BY w A'rrv.

`'UnitedStates Patent O 2,903,246 BAsEBoARD R-AnrA'roRs Richard W. Kritzer, Chicago, lll.

y Application December 20, 1957, Serial No. 704,073

l1 claim. (Cl. asv-133) i The invention relates to radiators adapted `for use along the base of the back wall and the floor of a room, generally known as `baseboardtype Yof radiators.

lOne object of the invention is to provide a radiator of this type which may be economically fabricated and installed, is eflicient' in heat-conduction and simple in construction.

yOther Objects will appear from .thefdetailed description.

The invention consists .in the several novel features which are hereinafter set forth and are more particularly defined by the claim at the conclusion hereof.

ln thedrawings:

aFig-y 1.- is a longitudinal sectionof a radiator exempli- ,fying the invention; l y

Fig 2 `is 'e .partial front elevation:

1: Figl. 3 is a transverse section vtaken 0nline 3--3 0f lg- .-Fig. 4 4is a section taken on line 4-4 of Fig. l; 7

Fig. 5 is an end elevation;

Figs. 6 and 7 are perspectives of one of the fins shown in lFigs. l to 3;

Fig. 8 is a longitudinal section of a radiator embodying a modified form of fins on the pipe through which fluid is circulated for heat-transfer to air in the casing;

Fig. 9 is a section taken on line 9--9 of Fig. 8; and

Fig. 10 is a plan view of said modified form of iins.

The invention is exemplified in Figs. l to 7 in a radiator-casing, generally designated 9 and comprising a front-wall 10, end-walls 11 and 12 and a top-wall 13 all secured together and adapted to extend along the back-wall and floor 15 of a room or enclosure of a building and functions as a baseboard. The casing is removably supported on the floor and against the backwall for access to the space enclosed by the casing. Strips 18 are secured on the back-wall 14 for attaching the casing to the room structure. A flange 19 on the back of the top-wall 13 detachably engages clips 20 on the upper ends of strips 18, and a bottom-flange 21 detachably engages clips 22 on forwardly extending arms on said strips and permit removal of the casing 9 from the back-Wall 14.

A pipe or conduit 25 extends through the end-walls 13 and 14 and longitudinally across the casing 9 between the front-wall 10 and the back-wall 14 for the circulation of a heating fluid, such as hot water or steam for the transfer of heat to air passing through the casing 9. Annular flanges or heads 26 are secured by screws 27 to pipe 25 and intert with slots 28 in the end-walls 12 and 13 for permitting forward separation of casing 9 from pipe 25.

For heat-transfer from pipe 25 to air in the casing 9, series of fins, generally designated 40, are mounted on pipe 25 between its longitudinal center and the ends of casing 9 respectively. Each fin is formed of suitable iinstock, such as sheet copper or aluminum, and includes a planar side 41 extending transversely of the casing 9 and including extensions above and below the pipe 25; an opening 44 surrounded by an annular flange 42 coaxial ice with and fitting around said pipe; right-angled marginal flanges 43 projecting from one face of said side 41 at the ends, top and bottom of the fin; and radial slits 45 between perforations 46 and opening 44. p y

The slits 45 and perforations 46 render 4the flanges 42 resilient against the `periphery of pipe 25 and assist in the conduction of air into the surrounding portion nf fin-'side 41. Each side 41 is also lprovided with a pair of vertical slots 47 along its ends and a central `slot 48 above and below pipe 25 for the flow of air through the fins. Flanges 49 are bent .along the sides of slots'48 to direct the air longitudinally of pipe 25. The .endwalls 11 and 12 are also vformed with vertical slots 24 ,for the entry of air into casing 9 and through the series of aligned slots 47 and 48 in the fins and longitudinally from the end-walls 11 and 12 to the longitudinal center o'f casing 9. Marginal flanges 43 on the fins confine `the air for such flow. The inlet slots 24 in end-walls 11 and 12 and the `slots 47 and 48 are provided `in the ns above and below pipe 25.

A pair of air impellers, generally designated 60, are disposed longitudinally between the inner ends of the `series of fins 40 and are driven by an electric motor 61. Each impeller is ofthe centrifugal type and includes a kcasing 62 having an air-intake 6 3 which faces the fin 40 at the inner end of one of the pair of series of pipe 25. Each impeller also includes a rotary propeller 64 for drawing air from the inlets 24 in opposite end-Walls `11 and `12 of casi-ng 9 longitudinally through slots 47 and 4ltl'in fins 40 and intake `63 into its casing 62 and forcing the air from casing 62 through a discharge-section '65.

I Front-wall 10 of casing 9 has secured thereto plates 66 which are each provided with an outlet controlled by a rotatable register valve 67 communicatively connected to one of the discharge trunks 65. The open ends of each trunk 65 is slidably and telescopically confined in a sleeve 68 on one of the plates 66 to permit separation of the casing from said discharge-sections.

The casing 9 and pipe 25 may be of any length according to the radiating capacities desired and the space available along the base of the back-wall. A recess 69 may be provided in the back-wall to accommodate the impellers and electric motor. Pipe 25, the impellers and motor are stationarily supported by brackets 70 secured to the strips 18.

The operation of the invention as exemplified in Figs. 1 to 7 will be as follows: Assuming a heating liquid, such as hot water or steam is circulated through pipe 25, heat will be conducted from said pipe to the annular flanges 43 and the sides 41 of fins 40 and below pipe 25. The impellers 60 will draw air through inlets 24 in both of the end-walls 24 of the casing and the slots 47 and 48 above and below pipe 25 in both series of fins into the intakes 63 of the impellers 60 and force the air through trunks 65 to valves 67. In transit through the slots 47 and 48 in fins 40 heat will be transferred from the fins to air passing into the impellers which will be discharged through valves 67 when they are open to outside of the casing and into the room surrounding the radiator. When access is desired to parts inside of casing 9 the flanges 19 and 21 on casing 9 may be released from clips 20 and 22 on strips 18 for removing casing 9 away from the rear-Wall 14 so that the impellers and motor will be accessible.

In Figs. 8 to l0, a modified form of fins is illustrated and designated for use in lieu of the fins 40 hereinbefore described. Each fin comprises an annular flange 81 fitting on and coaxial with pipe 25, a surrounding integral transverse planar hub 82, a series of parallel-sided strips 83 extending upwardly from a hub 82 and a series of parallel-sided strips 84 extending downwardly from hub 82. The strips 83 and 84 are twisted at hub 82 so their planar faces form vanes which extend in vertical planes parallel to the axis of the pipe 25. In fabricating these fins, the axial flanges 81 are first formed in the iin-stock. Parallel slits are then cut in the stock from the hub 82 to its upper and lower ends. The strips between the slits are then twisted 90 at the hub 82 so that the faces of the strips 84 will be in planes parallel to vertical axial plane of the pipe 25. The spaces between the vanes function to direct air to the impellers. This causes the air drawn into the impellers 60 to flush the planar faces of the fins without excessive frictional retardation. When this modified construction of iin is used, the impellers draw the air from the inlets 24 in the ends of casing 9 along both faces of the fins 80 and longitudinally through casing 9 into the intakes of the impellers for discharge of the heated air outside of the casing and into the surrounding room.

The invention is not to be restricted to the details set t forth since these may be modied within the scope of the appended claim without departing from the spirit and scope of the invention.

n Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

A baseboard radiator adapted to extend along the juncture between a oor and wall structure, said radiator Acomprising in combination an elongated casing including front and rear walls respectively, top and bottom walls respectively, and end walls closing the opposite ends of the casing, a uid conduit in the form of a cylindrical tube extending longitudinally through said end walls and the interior of the casing and adapted to communicate with a source of heating liuid, there being air inlet openings above and below the level of said conduit in said end walls, a twin-blower assembly disposed `within the casing medially of its ends above the level of said conduit and overlying the latter, said twin-blower assembly including longitudinally spaced impellers having axially aligned air inlets facing outwardly in opposite directions and facing said end walls respectively, an electric motor disposed between said impellers and operatively connected thereto in common for driving the same, said impellers having radial air discharge outlets facing said front wall, there being a pair of air outlet openings in said front wall in sealed connnunication with said air discharge outlets respectively, and a series of closely spaced sheet metal fins mounted on said conduit in heat exchange relationship respect thereto and within the casing, each lin having a medial opening receiving the conduit, said opening being bounded by an annular ange extending axially of the conduit and closely hugging the wall thereof, a flat hub portion surrounding the opening and extending transversely of the conduit, a series of closely spaced at vanes integral` with the hub and extending vertically downwardly from the lower region of the hub, all of said vanes being turned out of the plane of the hub and extending in parallelity longitudinally of the conduit.

References Cited in the le of this patent UNITED STATES PATENTS 622,872 Thornycroft Apr. 11, 1899 1,823,003 Replogle Sept. l5, 1931 1,914,198 Davis et al June 13, 1933 1,983,549 Krackowizer Dec. 11, 1934 2,063,736 Hardiman et al.l Dec. 8, 1936 2,063,757 Saunders Dec. 8, 1936 2,503,667 Hagen Apr. 11, 1950 2,532,288 Buschow Dec. 5, 1950 FOREIGN PATENTS 363,370 Great Britain Dec. 10, 1931 

